백준 2941번: 크로아티아 알파벳

문제출처: https://www.acmicpc.net/problem/2941

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
 
public class Main {
    private static String input = "";
    private static int count = 0;
    private static ArrayList<String> list = new ArrayList<>();
    
    public static void main(String[] args) throws Exception {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        input = reader.readLine();
        list.add("c="); list.add("c-"); list.add("dz="); list.add("d-");
        list.add("lj"); list.add("nj"); list.add("s="); list.add("z=");
        
        for(int i=0 ; i<input.length() ; i++){
            if (input.length() >= i+3 && isContain(i, i+3)) {
                i = i+2;
                continue;
            }
            if (input.length() >= i+2 && isContain(i, i+2)) {
                i = i+1;
                continue;
            }
            count++;
        }
        
        System.out.println(count);
    }
    
    public static boolean isContain(int start, int end){
        String word = input.substring(start, end);
        
        if(list.contains(word)){
            count++;
            return true;
        }
        else{
            return false;
        }
    }
}